Pass Door Wont Lock/Unlock W/Key (not remote related)

[DarkStar]

Has anyone had this issue? Right now I can confirm that the door locks work whenever they wanna work. Using the key. I could go out right now and the door locks might work or they might not. Its random. Whenever it works, the horn will beep once and the alarm light will blink to show its armed.

I think its the Door Lock Control Module inside the driverside door. Since that is what sends the signal to lock all the doors or unlock, Unlock works every time, just not Lock.